Then, they used algorithms to identify a group of 1 million female voters, largely in swing states, who were particularly receptive to the group's message.

The group stressed the importance of women's reproductive health over the issue of abortion during heated debates over the health-care law's requirement that all employers provide contraception coverage to their employees.

"This would be an election where we could seize the opportunity," Anna Greenberg, Greenberg Quinlan Rosner, who worked for the group, said.

The Washington Post reported Planned Parenthood spent nearly $15 million supporting and opposing candidates who backed their liberal views, triple the $4 million it spent in 2008.

They focused mostly on swing states, such as Virginia, Ohio, and New Hampshire. But they also put some resources into solid red states, including Montana, where they targeted 41,000 female voters they thought they could turn out for Sen. John Tester's reelection.

Campaigns and outside groups also spent $39 million on abortion-related ads this cycle, a huge jump over previous cycles.

Planned Parenthood strongly supported President Obama who fought heavily to keep taxpayer funding for the group.